Theresa is located in north New York. Theresa is part of Jefferson County. Theresa has 1.25 square miles of land area and 0.06 square miles of water area. As of 2010-2014, the total Theresa population is 844, which has grown 3.94% since 2000. The population growth rate is higher than the state average rate of 3.26% and is much lower than the national average rate of 11.61%. Theresa median household income is $49,338 in 2010-2014 and has grown by 29.41% since 2000. The income growth rate is lower than the state average rate of 35.25% and is higher than the national average rate of 27.36%. Theresa median house value is $111,600 in 2010-2014 and has grown by 109.38% since 2000. The house value growth rate is higher than the state average rate of 90.79% and is much higher than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Theresa is worse than the state average in quality. The Theresa area code is 315.